Hello Fotis,
A great macro shot of this very pretty robber fly, I have never seen one of this particular color and markings. The metallic green eye immediately captures your attention. Overall focus looks good and exposure is right on the money.
The leaf it is perched on appears to be quite jagged around it's edges. I at first thought this was it's natural shape, but now wonder if it has been chewed on by a caterpillar? Well done!!
Ron